InteliATS
NT
STD, SW version 2.0, ©ComAp – June 2010
42
IA-NT- STD-2.0-Reference Guide.pdf
shor
eedback
of t
se/Open
G
ansfer Del
100
must be set to sum of “MCB opening” + “del”
after the
MCB feedback
input deactivates.
time.
V
[V]
hree is used.
:
– 300V
[V]
hree is used.
hold f
ll three phases are checked. Maximum out of three is used.
ency
Main <Freq
Threshold for mains underfrequency. All three phases are checked. Maximum out of three is used.
ens On
[MAINSFAIL / GENRUN]
If the
Transfer Del
setpoint is set
ter
If some delay between
MCB f
than the time required for opening
he
deactivation and closing o
f
GCB Clo
circuit breaker, the controller closes
CB
output is required, then the
Tr
Close/Open
output straight away (
ms)
MCB
Close/Open
MCB
Feedback
GCB
Close/Open
MCB opening del
Transfer Del
M
CB
lose/Open
MCB
Feedback
GCB
Close/Open
C
Mains
>
Threshold for mains overvoltage. All three phases are checked. Maximum out of t
V
Step:
1
Range
(Mains <V)
Mains
<V
Threshold for mains undervoltage. All three phases are checked. Maximum out of t
Step:
1V
Range:
50V - (Mains >V)
Mains
>Freq [%]
Thr s
or mains overfrequency.
e
A
Step:
0.1% of Nominal frequ
Range:
50 (
s
) – 150.0%
Mains
<Freq [%]
Step:
0.1% of Nominal frequency
Range:
50% – 150.0(Mains >Freq)%
MCB Op
MAINSFAIL
ed.
GENRUN
The command to open the MCB is given immediately after mains fail condition evaluat
The command to open the MCB is not given till the Gen-set starts (with respecting the setpoint
EmergStart Del
), reaches
Running
state, reaches proper voltage and frequency and
Min Stab Time
elapses. After that, the MCB is opened,
Transfer Del
timer is started and the GCB is closed after the
timer elapses.
N
OTE
:
This option should be used for MCBs using 230V control and not equipped with the undervoltage coil.
Transfer
Del
MCB opening
